Generally we think that sloths are the laziest creatures in the world, after all, the names have been laid out here, but in the magazine "Zoology" found an animal that has not moved once in 7 years, and does not eat or drink between these 7 years, even mating is once every 12.5 years, to know that reproduction is the most important thing for all creatures in nature. But the amazing thing is that the cave salamander did not become extinct because of this, so how did the cave salamander that has been mating for so long survive to the present?
<h1 class="pgc-h-arrow-right" data-track="4" > lazy to the extreme. </h1>
Over the eight years from 2010 to 2018, researchers conducted a long-term study of 19 salamanders in Slovenian underground caves in Bosnia and Herzegovina.
The researchers first marked the cave salamander, and then put it back, it turned out that the cave salamander is really "lazy", the average moving distance is not more than 10 meters, most of the cave salamanders only moved about 5 meters, the most active one is only 38 meters in 230 days, the most active nature has the least active, and the least active one has remained motionless for 7 years, because from the first discovery to 2569 days, the researchers found it in the same location.
Cave salamander not only does not love to move, but more strange is that the cave salamander is still lazy to reproduce, it is reasonable to say that the meaning of the existence of each creature in nature is to reproduce offspring, but the cave salamander is only mated once every 12.5 years on average, and the female cave salamander does not lay an egg every 7 years, this "laziness" is simply unheard of.
<h1 class="pgc-h-arrow-right" data-track="12" >why is the salamander so "lazy"? </h1>
Scientists speculate that the reason why the salamander is likely to reduce energy consumption is to reduce energy consumption. The cave salamander lives in an underground cave where there is almost no sunlight, and the plant cannot photosynthesize and thus cannot survive, and the plant as a producer, without sunlight means
There is no energy, so the energy in the underground cave is mainly obtained by exchanging with the outside water body, so the resources inside the cave are very limited. In such an environment, in order to survive, the cave salamander gradually evolved into what it is now.
The reason why the cave salamander has less energy needs, mainly depends on their unique metabolic methods, when the food is abundant, the cave salamander will eat a lot of food, and then convert it into sufficient sugar and other nutrients, and stored in the liver, and when the food is scarce, they will reduce their metabolic ability to consume sugar and other nutrients in the liver, so as to eat a tube for ten years, so as to ensure that they can survive.
Although the cave salamander has been lazy to the extreme, this laziness has also allowed the cave salamander to evolve an enviable physiological function - longevity, scientific reports of reality, individual cave salamanders can easily live to 100 years old, but also do not appear aging.
<h1 class="pgc-h-arrow-right" data-track="19" > what kind of animal is the cave salamander? </h1>
Cave salamander is an amphibian, first discovered in 1768 by austrian doctors and natural scientist Laurent, shrimp and snails as the main food, but also eat insects, now live in caves in the Dinaric Alps, and because the cave salamander has long lived in caves without light, the eye use is very small, so the eyes of the cave salamander are very seriously degraded, it can be considered that the cave salamander is blind, so the cave salamander is also called a blind salamander, but although their eyes are not good, their hearing is very sensitive.
In addition, the appearance of the cave salamander is more peculiar, often mistaken for a dragon, first of all, the cave salamander has a slender body like a dragon, and a long face, but the body size is much smaller than the dragon, the length of the cave salamander is generally 20-30 cm, the female is larger than the male; secondly, the whole body of the cave salamander does not have scales like the dragon, and the body of the cave salamander is yellowish white or pink and gray.
At present, the cave salamander only exists in the caves of Europe, because the cave is relatively small due to the human influence, and the cave salamander is the largest predator in the cave, it has long adapted to this indisputable environment, but it is also possible that it is because of this environment that the "laziness" of the cave salamander has been created.